Test-retest reliability of electromyographic variables of masseter and temporal muscles in patients with cerebral palsy

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Postactivation Potentiation Biases Maximal Isometric Strength Assessment

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Modelagem matemática de tumores e estequiometria biológica

Cancer biology is a complex and expanding field of science study. Due its complexity, there is a strong motivation to integrate many fields of knowledge to study cancer biology, and biological stoichiometry can make this. Biological stoichiometry is the study of the balance of multiple chemical elements in biological systems. A key idea in biological stoichiometry is the growth rate hypothesis, which states that variation in the carbon:nitrogen:phosphorus stoichiometry of living things is associated with growth rate because of the elevated demands for phosphorusrich ribosomal RNA and other elements necessary to protein synthesis. As tumor cells has high rate proliferation, the growth rate hypothesis can be used in cancer study. In this work the dynamic of two tumors (primary and secondary) and the chemical elements carbon and nitrogen are simulate and analyzed through mathematical models that utilize as central idea biological stoichiometry. Differential equations from mathematical model are solved by numerical method Runge-Kutta fourth order

Interpretação da fadiga muscular por meio da eletromiografia durante corrida em esteira

O presente estudo teve como objetivo identificar a fadiga muscular por meio da amplitude e freqüência do sinal eletromiográfico (EMG) do músculo vasto lateral (VL) e reto femoral (RF) do membro inferior direito, durante protocolo incremental de corrida em esteira e nas contrações isométricas submáximas realizadas no início e após cada velocidade. Participaram deste estudo 07 voluntários saudáveis, do gênero masculino, experientes em corrida na esteira, com idade média de 25 anos (± 4,3), sem antecedentes de doenças músculo-esqueléticas nos membros inferiores e de antropometria semelhante. Foram realizadas três contrações isométricas voluntárias máximas (CIVM = 100%) de extensão do joelho para posterior determinação da contração submáxima de 50% da CIVM (CI-50%). O protocolo de corrida foi composto de um aquecimento de 5 minutos (9 km/h), e após iniciou-se o teste com velocidade inicial de 10 km/h e incremento de 1 km/h a cada 3 minutos, até a exaustão voluntária, havendo uma pausa entre cada velocidade de aproximadamente 2 minutos. Antes do início da corrida e após cada velocidade realizou-se uma contração isométrica com 50% da CIVM (CI-50%) de 5s de duração. No sinal eletromiográfico coletado durante a corrida, os valores de RMS (Root Mean Square) dos músculos VL e RF foram obtidos no período correspondente a um ciclo completo da passada a 10% e 100% do tempo analisado (120 segundos finais de cada velocidade) por meio de rotina específica (Matlab). No sinal eletromiográfico coletado durante as CI-50% (5s), os valores de RMS e FM (freqüência mediana) foram obtidos no período de 1s (intervalo de 1 a 2s). A normalidade dos dados foi determinada através do teste de Shapiro-Wilk. Utilizou-se teste-t de Student para amostras pareadas, e o nível de significância (p) adotado foi de p<0,05. Os resultados...(Resumo completo, clicar acesso eletrônico abaixo)

Predição da emissão de metano entérico de bovinos Nelore

Pós-graduação em Zootecnia - FCAV

Preocupação com a forma do corpo de graduandos de Farmácia-Bioquímica

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Growth evolution of self-textured ZnO films deposited by magnetron sputtering at low temperatures

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Comparison of snow data assimilation system with GPS reflectometry snow depth in the Western United States

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Response of cardiac autonomic modulation after a single exposure to musical auditory stimulation

The acute effects after exposure to different styles of music on cardiac autonomic modulation assessed through heart rate variability (HRV) analysis have not yet been well elucidated. We aimed to investigate the recovery response of cardiac autonomic modulation in women after exposure to musical auditory stimulation of different styles. The study was conducted on 30 healthy women aged between 18 years and 30 years. We did not include subjects having previous experience with musical instruments and those who had an affinity for music styles. The volunteers remained at rest for 10 min and were exposed to classical baroque (64-84 dB) and heavy metal (75-84 dB) music for 10 min, and their HRV was evaluated for 30 min after music cessation. We analyzed the following HRV indices: Standard deviation of normal-to-normal (SDNN) intervals, root mean square of successive differences (RMSSD), percentage of normal-to-normal 50 (pNN50), low frequency (LF), high frequency (HF), and LF/HF ratio. SDNN, LF in absolute units (ms (2) ) and normalized (nu), and LF/HF ratio increased while HF index (nu) decreased after exposure to classical baroque music. Regarding the heavy metal music style, it was observed that there were increases in SDNN, RMSSD, pNN50, and LF (ms (2) ) after the musical stimulation. In conclusion, the recovery response of cardiac autonomic modulation after exposure to auditory stimulation with music featured an increased global activity of both systems for the two musical styles, with a cardiac sympathetic modulation for classical baroque music and a cardiac vagal tone for the heavy metal style.

Design and implementation of wireless sensor networks for impedance-based structural health monitoring using ZigBee and Global System for Mobile Communications

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Structural damage detection in an aeronautical panel using analysis of variance

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Influence of neuromuscular fatigue on co-contraction between vastus medialis and vastus lateralis during isometric contractions

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Quantitative end qualitative analysis of the electrical activity of rectus abdominis muscle portions

The purpose of this study was to investigate the electrical behavior pattern of the Rectus abdominis muscle by qualitative and quantitative analysis of the electromyographic signal obtained from its superior, medium and inferior portions during dynamic and static activities. Ten voluntaries (aged X = 17.8 years, SD = 1.6) athletic males were studied without history of muscle skeletal disfunction. For the quantitative analysis the RMS (Root Mean Square) values obtained in the electromyographic signal during the isometric exercises were normalized and expressed in maximum voluntary isometric contraction percentages. For the qualitative analysis of the dynamic activity the electromyographic signal was processed by full-wave rectification, linear envelope and normalization (amplitude and time), so that the resulting curve of the processed signal was submitted to descriptive graphic analysis. The results of the quantitative study show that there is not a statistically significant difference among the portions of the muscle. Qualitative analysis demonstrated two aspects: the presence of a common activation electric pattern in the portions of Rectus abdominis muscle and the absence of significant difference in the inclination angles in the electrical activity curve during the isotonic exercises.

Challenging postural tasks increase asymmetry in patients with parkinson's disease

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Análise dos indicadores biométricos e nutricionais da cultura da alface (Lactuca sativa L.) irrigada com água tratada magneticamente utilizando modelagem fuzzy

Pós-graduação em Agronomia (Irrigação e Drenagem) - FCA